I. Introduction
Recently, web search engines become vital in people's daily life and are widely used to retrieve information of realworld entities including people themselves. In such cases, users enter the name of the target entity in search engines to obtain a set of Web pages that contain the name. However, the ambiguous of name (many entities share the same name or an entity has several names) typically causes ambiguous search results containing Web pages of several different entities. Such ambiguity is more common in Chinese names. For example, when search “Yao Ming”, the results are dominated by the well-known basketball player, and users have to manually fitter out these Web pages to identify the expected non-famous people who share the same name. This is the personal name ambiguity problem.